<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>anchored_heading</title>
    <script src="https://cdn.bootcss.com/vue/2.6.10/vue.js"></script>
</head>
<body>
    <div id="app">
        <anchored-heading v-bind:level="level">Hello world! welcome</anchored-heading>
    </div>
    <script>
        Vue.component('anchored-heading', {
            render: function(createElement){
                return createElement(
                    'h' + this.level,
                    this.$slots.default
                );
            },
            props: {
                level: {
                    type: Number,
                    required: true
                }
            }
        });
        var app = new Vue({
            el: '#app',
            data: {
                level: 1
            }
        });
    </script>
</body>
</html>
